and can't find that they make a rule that blue badge holders cannot park where loading is banned.

His client parked outside 806 or thereabouts

it is very odd that loading is banned only on half of the double yellow (the single yellow line on the map denotes double yellow in real life and the red line no loading at any time) and that the double yellow lines are continuous without a break to mark where the loading restriction changes but that is only half of the riddle.

The question that Mr Mustard poses for other experts is this:

How is the restriction on parking for blue badge holders where loading is banned enshrined in law if it isn't within the statutory instruments nor can he find it in the Free Parking Places TMO (2014 No. 120)?

Do please give him the benefit of your advice.

Mr Mustard is going to take his client's PCN to adjudication and will pay half if he loses. The council have already refused an informal challenge on this basis:

I am 81 years old and a Blue Badge holder (Photocopy enclosed).

I had to give my mentally and physically disabled neighbour a lift to the Halifax to withdraw her disabled allowance. We were in the Bank approx ten minutes.